Machine for forging and welding metallic rings.



,No. 876,709. PATENTBD JAN. 14, 1908.

J. GIRLOT. MACHINE FOR PORGING AND WELDING METALLIC RINGS.

APPLICATION FILED APR.16. 1906.

ATTORNEYS JOSEPH GIRLOT, OF LAEKEN, BELGIUM.

MACHINE FOR FORGING AND WELDING METALLIC RINGS.

Specification of Letters Patent.

Patented Jan. 14, 1908.

Application filed April 16. 1906- Serial No- 312062.

To all whom it may concern:

Be it known that I, JOSEPH GIRLOT, a subject of the King of the Belgians, residing at 351 Avenue de la Reine, Laeken, Belgium, have invented certain new and useful Improvements in Machines for Forging and Welding Metallic Rings, of which the following is a specification.

A machine exists for forging or welding metallic rings of any kind, the chief feature ofwhich consists of a system of rollers which impart a rotary movement to the ring, durmg which time hammers beat simultaneously on this ring 011 its two faces.

.In the case of chain rings or links formed by means of a flat spring wound helically or in a coil, the machine comprises certain additional parts for entwining this strip into a finished ring or rings during the welding.

The present invention consists of an arrangement whereby the hammers above mentioned are operated, and which will be described with the aid of the annexed drawings showing a complete machine constructed for making rings of several sizes of thickness and dimensions.

Figure 1. is an elevation of the machine. Fig. 2. is a plan. Fig. 3. represents the arrangement for permitting the separation of the rollers which feed the ring being operated on, and Fig. 4 shows the gear for transmitting rotary motion to these rollers.

The hammers A A have rods B B provided with strong springs C C. The spring on the left ofthe drawing is connected directly to the upper end of a slotted lever D, while the right hand spring is connected to the lower end of this lever through the lever E pivoted at the fixed point F, and the connecting rod G. The lever D, pivoted at a fixed point II has a guide slot which receives the slide I on the crank pin of the crank J on the driving shaft K, actuated by the pulleys L. It will be seen that by this arrangement, and the rotation of the shaft K in the direction of the arrow, a vibratory movement is given to the levers and that the beating action of the hammers will take place when the slide I travels over the lower part of its course, this part being smaller than the upper arc which corresponds to the return movement of the hammers.

It follows that the striking motion is sharp and strong in such manner as to impart the greatest percussive effect while at the same time having the desired elasticity to avoid deterioration of the machine, whereas the return is slower.

It is unnecessary to describe the other working parts of the machine which are already known or shown in previous patents.

What I do claim and desire to secure by Letters Patent is 1. In a machine for making metallic rings, oppositely faced hammers, a support therefor and for the ring to be operated on between the same, a pivoted lever for each hammer operatively connected thereto, a connection between said levers and means in connection with one of said levers for giving said levers a vibratory movement.

2. In a machine for making metallic rings, oppositely faced hammers, a support therefor and for the ring'to be operated upon between the same, a pivoted lever for each hammer, a spring connection between each of said levers and its hammer, a link connection between the levers, and means in connection with one of said levers for giving said levers a vibratory movement.

3. In a machine for making metallic rings, oppositely faced hammers, a support therefor and for the ring to be operated upon between JOSEPH GIRLOT.

'lVitnesses:

GUsTAvE PIERRY, EMILE NUYTs. 

